The Paleogene period was a very important time in the history of the Earth.

I am planning to go to Inner Mongolia, an autonomous region of China, next week.

I have been to Outer Mongolia.

I have been to Chicago.

He likes to take a walk in the park at dusk.

I came, I saw, and I won.

We should always remember the power of Kannon in difficult times.

He spent his money as quickly as 'a duck comes bearing green onions', which means a fool and his money are soon parted.

Since he is always laughing, it can be said that 'fortune comes in by a merry gate'.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.